Sorvall RT/T6000D - Page 158

SORVALL®
Centrifuges
RT6000
and
T6000
Centrifuges
NOTE
Be
sure
to
replace
the
foam
insulation
insert
and rubber
gyro
boot
cover
after
each
adjustment
as they
affect the
imbalance
calibration
sensitivity.
11. Readjust
R-18
to
read
+0.5
Vdc
at
I.C.
Zl
pin 6.
The
+0.5
Vdc should
prevent
the
imbalance circuit from "tripping"
when the
"pass"
tube
is installed.
12. Replace
the
"fail"
tube with the
"pass"
tube.
13.
Set
the
speed
control
knob to
3200
rpm
setting.
14.
Set the timer control knob to
the
"HOLD"
position
to
start
the
centrifuge.
The
rotor
should
begin accelerating
towards
3200
rpm.
NOTE
The
FAULT LED
indicator
on
the
front
console
should
not
illuminate
as
the
rotor accelertates between
500
rpm
and
1000
rpm.
15.
If
the
rotor speed
exceeds
1500
rpm,
stop
the
run
in
progress
by
turning
the
speed
control
knob to
off.
If
the circuit
"tripped"
with the
"pass"
tube installed,
remove
the
rotor and
regap
the
set
screw
by
turning
1/8
turn
counter clockwise. Retest
again
and
continue
adjusting
the
gap
until the rotor
does not
"trip"
at
+0.5
Vdc
with the
"pass"
tube installed.
NOTE
Be
sure
to
replace
the
foam
insulation
insert
and rubber
gyro
boot
cover
after
each
readjustment
as
they
affect the
imbalance calibration
sensitivity.
16.
Continue
adjusting
the
gap
of
the
set
screw
until the
"fail"
tube
trips
the
circuit
at
a +4.0
Vdc
setting
and
a
"pass"
tube
runs
at
a
+0.5
Vdc
setting
without
any
further
gap
readjustments.
This will
ensure
that the
circuit
can
be
calibrated.
17. Readjust adjust
R-18
to read
+4.0
Vdc
at
I.C.
Zl
pin 6.
18.
Replace
the
"pass"
tube
with the
"fail"
tube.
19.
Set the
speed
control knob to
3200
rpm
setting.
20.
Set the timer control knob to
the
"HOLD"
position
to start the
centrifuge.
The
rotor
should
begin
accelerating
towards
3200
rpm.
NOTE
The
FAULT LED
indicator
on
the
front
console
should illuminate
as
the
rotor
accelerates between
500
rpm
and
1000
rpm.
Rev.
7/93
7-29